Feed-water heater



(No Model.) J. L. HUNTER.

FEED WATER HEATER. No. 398,966. Patented Mar. 5, 1889.

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JOSEPH L. HUNTER, OF PITTSBURG, PENNSYLYANIA.

FEED=WATER H EATER.

SPECIFICATION forming part of Letters Patent No. 398,966, dated March 5,1889.

Application filed September 11, 1888. Serial No. 285,145. (No model.)

T 0 all whom it may concern:

Be it known that I, JOSEPH L. HUNTER, of the city of Pittsburg, in thecounty of Allegheny and State of Pennsylvania; have invented a new anduseful Improvement in Feedater Heaters; andI do hereby declare thefollowing to be a full, clear, and exact description thereof.

My invention relates to feed-water heaters, and is especially adaptedfor the purpose of h eating feed-water for steam-boilers by means ofexhaust steam, although I do not desire to limit it to this particularuse.

I will now describe my invention so that others skilled in the art maymanufacture and use the same, reference being had to the accompanyingdrawings, forming part of this specification, in which- Figure l is avertical sectional view of the heater on the line :0 as of Fig. 2. Fig.2 is a crosssection on the line y y of Fig. 1. Fig. 3 is a like view onthe line .2 2 of Fig. 1.

Like letters of reference indicate like parts wherever they occur.

In the drawings, (0 represents a cylindrical boiler or water-tank havingat its upper end side of the cylinder a, one of the chambers I being atthe upper portion of the cylinder and the other at the lower portion.Communicating with the chamber 9, at the upper portion of the cylinderto, is an exhaust-steam inlet, h, by which the exhaust-steam is fed totheheating-pipes, and opening from the chamber g, at the lower portionof the cylinder (1, is an exhaust-steam outlet, 2'.

The operation is as follows: Vvater is admitted to the cylinder atthrough the feed-inlet d and passes out of the cylinder or heaterthrough the water-outlet e. The exhauststeam, passing through the pipesf, communicates its heat to the water within the heater.

I am aware that teed-water heaters for steamboilers having curved pipessituate within a cylindrical case are not new, and I do not desire toclaim the same broadly. The advantages of my improvement are, however,cheapness of construction and a direct course for the steam through thepipe on a straight line, excepting where the curvature at the ends ofthe heating-pipes prevents such an obstruction to the passage of thesteam as would be caused by a sharp angle.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

As an improvement in feed-water heaters, a water-tank, a, annularsteam-chambers g g, arranged outside of and encircling the watertank,and steam-heating pipes straight and vertical through their majorportion, curved at their ends, and extending radially into thesteam-chambers, substantially as and for the purpose described.

In testimony whereof I have hereunto set my hand this 25th day of July,A. D. 1888.

JOSEPH L. HUNTER.

Witnesses:

CHAS. A. MAOKEY, W. B. CORWIN.

